Burner



July 9, 1935. H. 1. BRANDJORD BURNER Filed March 20, 1930 1 after M11 Patented July 9, 1935 UNITED STATES PATENT OFFICE BURNER, I Hans I. Brandjord, Souris, N. Dak. Application March 20, 1930, Serial No. 437,427

1 Claim.

ito burn and thus destrop noxious weeds and the stubble prior to the plowing; and also to destroy different kinds of weeds after they have appeared above the ground following the action of cultivators.

The device will also be found useful stroying plant growths along highways. With the above and such other objects in view as may be more fully hereinafter described, I

for dehave invented the device illustrated in the ac-- companying drawing, in which:

Figure l isa central longitudinal section of the device.

Figure 2 is an section of the burner. V

Figure 3 is a section on line 8-8 of Fig. 2.

Figure 4 is a'section on line 9-9 of Fig. 2.

The improved device is adapted to be drawn over the groundby any suitable power, either motor driven tractor or truck, or horse power.

The improved burner includes a tubular member l l coupled to a pair of runners l2 by inclined braces it. The runners 12 are curved upwardly at the front'and rear as at M and IS, the upturned terminals i4 being connected by a rod I6; while the terminals l5 are connected by a rod ll. A deflecting plate [8 is rolled at the ends around the rods l6 and I1, and bears at the center over the member H as shown. The ends of the member Hare formed with central vertical 20 and 2| and with the longitudinal central portion of the bottom curved upwardly as shown at 22, to form a longitudinally directed recess 23 in which the horizontal portion 24 of the intake conductor for the liquid fuel is' received. A plurality of orifices 25 are formed through the bottom of the member I I near the upturned portion 22, through which the burning mixture passes into the space enlarged longitudinal verticalbetween the deflecting plate I8 and the ground At its ends the pipe member 24 is provided respectively with controlling valves 21 and 28 having nipples 29 and 30 directed inwardly or toward the interior of the member I l which thus becomes 5- the mixing chamber of the burner, the requisite proportion of air entering through the openings 20 and 2| and mingling with the vaporized liquid fuel.

The feed pipe for the liquid fuel is represented 10 at 3|, and is connected to the horizontal pipe section 24. The horizontal portion 24 of the fuel intake is exposed within the recess 23 to the intense heatfrom the heated wall 22, and the hydrocarbon fuel is thereby vaporized and enters 5 the member H as a highly inflammable gas, and commingles with the air entering through the openings 20 and 2|, and passes thence downiwardly through the orifices 25 and whenignited produces intense flames which are projected 20 downwardly against the ground and consumes any growth thereon. The plate I8 operates to confine the fire to the space therebeneath.

The burner is coupled tothe pulling element, by chains 32 or the like connected to the intake 25 pipe 3 l, is one end of a flexible conveyor tube 34, the other end of which is connected to the valve controlled outlet of a fuel tank 33, swung under the truck l0. 7

Having now described my invention, that which 30 I claim to be new and desire to protect by Letters Patent, is: V

In a device as described, a mixing chamber including a bottom wall having a longitudinal external recess therein, a fuel vaporizing pipe, seated 35 within said recess throughoutits length, means for supplying fuel to said pipe, and means whereby vapors formed in the pipe will be injected into said chamber, at both ends thereof, said bottom wall having gas jet apertures therein along each 40 sidelof said vaporizing pipe.

HANS I. BRANDJORDf 

